AB0968 ACUTE EFFECT OF A SINGLE BOUT OF BICYCLE ERGOMETRY EXERCISE ON AFFECT, MOOD AND PAIN IN INDIVIDUALS WITH KNEE OSTEOARTHRITIS
Authors: O. Idowu, O. Peter-Ogba, H. Fawole
Journal: Annals of the Rheumatic Diseases (2022)

Background Exercise provokes psychological responses that results in an increase in positive affect and mood, and a reduction in negative affect in patients with musculoskeletal problems including knee osteoarthritis (KOA) (Hoffman and Hoffman, 2007; Ekkekakis and Petruzzello, 1999). However, there is no consensus on the optimum duration of exercise that will bring about such positive effects among individuals with KOA. Objectives The objective of this study was to compare the acute effects of 10- and 15- minute bicycle ergometry exercise on affect, mood and pain in patients with KOA. Methods A quasi-experimental study with a follow-up arm. Forty-six participants with KOA were randomly assigned to either a 10-minute bicycle ergometer (10BE) exercise group or a 15-minute bicycle ergometer (10BE) exercise group. Participants’ affect, mood and pain were assessed at baseline, pre-exercise, immediately after the exercise, 10 minutes post-exercise, and 20 minutes post-exercise using the International Positive and Negative Affect Scale, Visual Analogue Mood Scale, and Visual Analogue Scale, respectively. Descriptive statistics, Friedman’s ANOVA, Mann-Whitney-U and generalised estimating equation were used to analyse the data with P-value at 0.05. Results Participants’ (94.23% females) age ranged from 40-79 years for the two groups. The mean age for 10BE and 15BE groups was 67.09±1.85 and 66.96±2.03 years, respectively. At baseline, the median scores for positive (19.00; interquartile range (IQR=18.00-20.00 vs. 20.00; IQR=18.00-21.00) and negative (8.00; IQR=7.00-11.00 vs. 9.00; 5.00-14.00) affect, mood (6.00; IQR= 3.00-8.00 vs. 7.00; IQR=4.75-8.00) and pain (5.00; IQR=5.00-8.00 vs. 5.50; IQR=5.00-7.00) were not significantly different between10BE and 15BE. Ten minutes of aerobic exercise significantly improved PA ( P =0.001; Effect size (Es)=0.25)) and mood ( P =0.001; Es=0.58), and reduced NA ( P =0.001; Es=0.44) and pain ( P =0.001; Es=0.73) of participants across the time points of the study. A 15-minute aerobic exercise also significantly improved PA ( P =0.001; Es=0.25), mood ( P =0.001; Es=0.45) and reduced NA ( P =0.001; Es=0.49) and pain ( P =0.001; Es=0.84) of participants across the time points of the study. There was no significant difference between groups and group-time interactions regarding effect of aerobic exercise on the outcomes (p&gt;0.05). Conclusion Both 10- and 15-minutes single bouts of bicycle ergometry exercise had positive effects on affect and mood in individuals with KOA. Ten and 15- minutes single bout of bicycle ergometry exercise had comparable effects on affect and mood improvements in individuals with KOA. References [1]Ekkekakis P, Petruzzello SJ (1999). Acute Aerobic Exercise and Affect. Sports Medicine, 28(5):337–374. doi:10.2165/00007256-199928050-00005. [2]Hoffman MD, Hoffman DR (2007). Does aerobic exercise improve pain perception and mood? A review of the evidence related to healthy and chronic pain subjects. Current Pain and Headache Reports, 11(2):93–97. doi:10.1007/s11916-007-0004-z Disclosure of Interests None declared